Write the method drawSquare below. /** Precondition: 0 ≤ x < 10, 0 < y ≤ 10, and len > 0. * Draws a square on a 10-by-10 xy-coordinate grid * and prints the square’s side length and area. * The upper left corner of the square will be located * at the coordinate (x, y) and the side length of the * square will be len (or as large as will fit in the grid). */ public void drawSquare(int x, int y, int len)